{"id":682,"date":"2008-07-07T12:59:19","date_gmt":"2008-07-07T12:59:19","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/682"},"modified":"2008-07-10T03:05:17","modified_gmt":"2008-07-10T03:05:17","slug":"bertha-becomes-a-hurricane","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/682","title":{"rendered":"Bertha becomes a hurricane"},"content":{"rendered":"

\"GOES-12<\/a><\/p>\n

Hurricane Bertha<\/strong><\/a> became the first hurricane of the season in the Atlantic Basin on 07 July 2008<\/strong><\/a>,\u00c2\u00a0<\/em><\/em> <\/em><\/em>setting a new record for the furthest-east named storm formation in the tropics<\/em>.<\/em> GOES-12 IR images from the CIMSS Tropical Cyclones<\/strong><\/a> site (above)<\/strong><\/em> showed increasing coverage of cold cloud top temperatures and the formation of an eye; microwave imagery from the polar-orbiting SSM\/I instrument (below)<\/strong><\/em> began to show better evidence of an eye structure a few hours before the geostationary satellite imagery.<\/p>\n

\"SSM\/I<\/a><\/p>\n

GOES-12 visible imagery (below)<\/strong><\/em> showed a closer view of the forming eye of the hurricane.<\/p>\n

\"GOES-12<\/a><\/p>\n

A plot of the CIMSS Advanced Dvorak Technique<\/strong><\/a> intensity estimate (below)<\/strong><\/em> showed that Bertha began a period of more rapid intensification during the early morning hours of 07 July.<\/p>\n

\"Advanced<\/a><\/p>\n

Bertha had been moving northwestward over increasingly warmer Sea Surface Temperatures (below)<\/strong>,<\/em> which may have played a role in the intensification of the tropical cyclone.<\/p>\n

\"Sea<\/a><\/p>\n

UPDATE:<\/strong> Hurricane Bertha rapidly intensified into a Category 3<\/strong> storm during the afternoon hours on 07 July, with the CIMSS ADT<\/strong><\/a> intensity estimation technique suggesting peak wind speeds near 115 knots. During this period of rapid intensification, Bertha also displayed a nice eye on satellite imagery (QuickTime animations:<\/strong> GOES-12 visible<\/strong><\/a> | GOES-12 IR<\/strong><\/a>). It is interesting to note that the MIMIC Total Precipitable Water product<\/strong><\/a> (below)<\/strong><\/em> indicated that dry Saharan Air Layer (SAL)<\/strong><\/a> air had wrapped completely around Bertha during the 05-08 July period — the presence of such dry air in close proximity to a tropical cyclone would normally be thought of as a negative factor for rapid intensification!<\/p>\n

\"MIMIC<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Hurricane Bertha became the first hurricane of the season in the Atlantic Basin on 07 July 2008,\u00c2\u00a0 setting a new record for the furthest-east named storm formation in the tropics. GOES-12 IR images from the CIMSS Tropical Cyclones site (above) showed increasing coverage of cold cloud top temperatures and the formation of an eye; microwave […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,26,31,2],"tags":[],"class_list":["post-682","post","type-post","status-publish","format-standard","hentry","category-goes-12","category-poes","category-synthetic-satellite-imagery","category-tropical-cyclones"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=682"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/682\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}